MT88E43AE ZARLINK [Zarlink Semiconductor Inc], MT88E43AE Datasheet - Page 12

• Manufacturer Part Number: MT88E43AE
• Description: Extended Voltage Calling Number Identification Circuit 2
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

MT88E43
5-64
A
FCC Part 68, DOC CS-03, UL 1459, and CAN/CSA-
22.2 No. 225-M90 are all system (i.e. connectors,
power supply, cabinet, etc.) requirements. Since the
MT88E43 is a component and not a system, the
application circuit (Figure 11) has been designed to
meet the CO Trunk interface requirements of FCC,
DOC, UL, and CSA; thus enabling the complete
system to be approved by these standards bodies.
Products are designed in accordance with meeting
the above requirements; however, full conformance
to these standards is dependent upon the application
in which the MT88E43 is being used, and therefore,
approvals are the responsibility of the customer and
Zarlink will not have tested the product to meet the
above standards.
TIP / A
RING / B
NOTE: Resistors must have 1% tolerance, capacitors have 20%
pprovals
: R
: R
: For BT Application C=0.1 F 5%, R
Figure 11 - Application Circuit with Improved Common Mode Noise Immunity and Isolation in
: Bridge rectifier diodes are 1N914.
For applications where CAS speech immunity is required (e.g. CIDCW)
C=0.1 F 5%, R
1
1
tolerance unless specified otherwise.
= 620K, R
330nF
= 430K, R
10%
100nF
10%
12K1
5%
4
4
= 63K4 for V
= 34K for V
Vdd
3
22nF
22nF
=825k
5%
5%
Motorola
4N25
DD
DD
1%, R
R
= 5V
R
464K
= 3V
1
1
5%
2
=226k
3
=422k
10% (See Figure 10)
10% (See Figure 10)
1N4003
1N4003
1N4003
1N4003
1N5231B
200K
5%
1%
Vdd
Vdd
1%, R
R
R
2
Vdd
=422k
4
4
10nF
Line Interface
150K
5%
1%
464K
V
CAP
MODE
IN+
IN-
GS
TRIGin
TRIGRC
OSCin
OSCout
V
TRIGout
Ref
SS
MT88E43
(FSK Interface Mode 0 selected)
FSKen
PWDN
DATA
DCLK
St/GT
V
= To microcontroller
= From microcontroller
ESt
INT
CD
DR
DD
StD
IC
R
R
3
2
Data Sheet
C
Vdd
1N914
Vdd
100K
20%